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Bug Reports
11

Example Bug Reports

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Studio Bugs: Studio crashes when resizing any 5x5x5 part

Roblox Studio will always crash when you try to resize a 5x5x5 size part using the resize tool, the properties widget, or command bar. Parts of any other size do not crash.

This happens only in Studio.
This started happening on December 20.

Repro

With Resize tool or Properties widget:

  • Create a part and set its size to 5,5,5 using the properties widget.
  • Select the part and choose the resize tool, or select the size field in the properties widget.
  • Try to resize the part, Studio will crash.

With script run from command bar:

local p = Instance.new("Part", workspace)
p.Size = Vector3.new(5,5,5)
p.Size = Vector3.new(10,10,10) -- Crashes

Both methods will crash 100% of the time.

Crash Dump

https://devforum.roblox.com/t/link-to-dm-to-studio-bug-files/######



Engine Bugs: Character spawns with green head in live games

When your character spawns in-game, your head will always be green.
This does not happen in Studio, it only happens in a real game.

This started happening today.
As far as I can tell, this happens 100% of the time with both R6 and R15 characters.

Repro



Engine Bugs: Glass material renders completely black

In-game and in Studio the glass material renders completely black.

This happens 100% of the time for me, but other people I’ve asked don’t have this problem.
This has been happening since I got my new GPU on December 20.

Specs

OS: Windows 10 Home
GPU: NVIDIA GeForce GTX 1070

This is what a default part inserted in Studio and changed to the glass material looks like for me.

image



Engine Bugs: Lag when creating ParticleEmitters

Sometimes when a ParticleEmitter is created by either the server or the client, Roblox will have a brief lag spike. Parenting the ParticleEmitter is not required, simply creating it with a script will cause the problem.

This started happening today.
This happens in-game, and in Studio about 50% of the time a ParticleEmitter is created.
This only happens with ParticleEmitters.

Repro

  • Run the below code.
  • Roblox will freeze briefly about 50% of the time after “Creating” is printed.
while wait(1) do
	print("Creating")
	local p = Instance.new("ParticleEmitter")
	print("Created")
end

ParticleEmitterLagExample.rbxl (17.2 KB)

Demonstration

If you look closely, you can see Roblox freezing briefly.

GIF | Gfycat

Microprofiler Dump

You can clearly see one of the lag spikes in this dump.
microprofile-20191220-022927.html (1.1 MB)


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